78842123170 has 64 divisors (see below), whose sum is σ = 150034135680. Its totient is φ = 29747547648.

The previous prime is 78842123159. The next prime is 78842123219. The reversal of 78842123170 is 7132124887.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72133144 + ... + 72134236.

It is an arithmetic number, because the mean of its divisors is an integer number (2344283370).

Almost surely, 2^78842123170 is an apocalyptic number.

78842123170 is a deficient number, since it is larger than the sum of its proper divisors (71192012510).

78842123170 is a wasteful number, since it uses less digits than its factorization.

78842123170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 78842123170 in words is "seventy-eight billion, eight hundred forty-two million, one hundred twenty-three thousand, one hundred seventy".